The number of major tic positions between successive major tic labels.
The value should be a positive integer. The default value is 1, which
means that a label is drawn at every major tic position (when major
tic labels are drawn at all). A value of 2 would draw a label only at
every other major tic position, while 3 would draw a label at every
third major tic position, and so on.

This property is used only when the draw-major-labels property of the chart-axis is
true.